Button-making machine



' 1 629 214 May 1927' H. ISRINGHAUS BUTTON MAKING MACHINE Filed July 7. 1924 2 Sheets-Sheet 1 a 10 F I g. 7:

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Ewe/1123 -1,629,214 May ISRINGHAUS AKING MACHINE Filed July 7. 1924 2 Sheets-Shoot 2 film aus ,Bmw

Patented a... 11,1927. 7

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PATENT OFFICE.-

I HUGO ISBINGHAUS, OF BARMEN, GERMANY.

Application w m 7, 1924,

of metal from In the manufacture been proposed to stamp sheet metal,

on opposite sides thereof, the

lower part respectively of the BUTTON-MAKING MACHINE.

buttons it has two strips of conducted through the machine upper and metal button,

to put one part upon the other, and to assemble the twoparts by flan part.

ging the one The niachines which have been used hitherto for this purpose possess certain inconveniences. sheet metal prising its own tools, the stain For instance, each strip of is worked by its own ram comped parts being put. together at another place so that the machine is of large size the buttons are not produced accuracy.

and expensive and with desired The machines commonly used are special machines for the metal button industry and the several elements of maclnne frame,

the machines,

ram and the like, are constructed only for this special purpose' I In contradistinction thereto this invention relates to a device which avoids the inconveniences mentioned and permits the adoption, centric press buttons.

without essential alterations, of any ecfor the production of metal This is of the greatest importance as .r isthus possible to use any existing eccentric presses for the production of buttons and to use the same eccentric presses at any time for the production of other articles.

This result is attained according to the present invention by bringing the strips of sheet metal as close together as possible and to work the same by means of one and the same tool operated from the one ram press, the two parts of the button.

of the this same tool serving for assembling The arrangement for the feeding of the strips of sheet metal is especially advantageous and adapted to the above mentioned conditions.

An embodiment ofthe invention is shown,

by way of example, on the accompanying drawing, in which Fig. 1 shows thecmachlne partly in vertical longitudinal section.

Fig. 2 is a plan view of-the Fig. 3 is a sectional view punch for stamping the upper same.

part.

Fig. 4 is a sectional view thro part of the punch.

Fig.

ugh-the lower 5 is a sectional view of the punch for assembling the upper and lower portions of the button. According to the present strips of sheet metal 1,2, from invention the two which the top Serial No. 724,730, and in Germany July 9, 1923.

As the sheet metalstrips are close together they can be worked by a common or sin le punching device. This device consists-o a bed 3 for the die plate 4 and a revolving disk 5, a punching plate 6 comprising two rows of punches 7 and 8 for the shaping of the parts of the button and a separate punch 9 de-' signed to assemble the to part with the bottom part all of the punc es being guided by guideways or apertures 4 in the stationary plate 4". The last punch of row 7 carriesa drawing device 7 This common device is operated preferably by the usual rams of an ordinary double acting eccentric press with outer or cutting ram and inner or cupping ram, trolled by the cutting ram and'a part of the extreme punch of row 7, e. g. the drawing tool 7 the extreme punch of row 8 and the punch 9 being controlled by theegpping ram. With this object in view the punchplate 6 is fixed to a cutting ram and a punch plate 6, 'fixed on the cupping ramfcarries the drawing tool.

Instead of a double action press a single action eccentric press may be used, the ram of which operates the rows of punches 7 and 8 and, at the same time, through the intermediary of a lever transmission or the like, the drawing tool 7", the extreme punch 8 and the punch on the down stroke 9. It is essential that the revolving disk forms a part of the die for the punches. It is mounted on the die bed 3 so as to be revoluthe rows of punches 7 and 8 being conble about a bolt 12 and advanced at each movement of the ram for one division in the well known manner by means of a spring controlled pawl '13 of a reciprocating carriage 14. Spring-controlled sleeves Y15 and stationary bolts 16 are arranged in the revolving disk 5 to for the top part and the bottom part of the button.

While the strip 1 of sheet metal is travelling through the press in the direction of the arrow 17 the first two punches 7 effect in the usual manner the shaping of the top part, viz the hollow pressing, stamping and punching, the last punch 7 consisting of a cutting tool 7 and a drawing tool 7 acts to force the shaped top part into the die 4 form together the moulds" for the completion of the cupwhereupon,

through i this die shaped part, it is drawn into the revolving disk.

The shapin of the bottom part is carried out'in a simi ar manner, the last punch 8 cutting the bottom 'part, forcing it through the die 4 and inserting it into a finished top part which, located in a cavity of the revolving disk, is brought under said bottom part upon rotation of said revolving disk.

The punch 9 efiects. at the next following stroke the connection of the top part and bottom part by flanging the edge of the top part over the rim of the bottom part.

At the front edge and rear edge of the press table 11 the feeding mechanisms for the sheet metal strips 1 and 2 are mounted by means of brackets 18. The feeding mechanism consists of two sets of rolls, each composed of one lower-roll 19 and of two upper rolls 20, 21. The lower rolls 19 and 19 are stationarily mounted in the-brackets 18 but the upper-rolls 20, 21 and 20, 21 are. mounted on oseillable bell-crank levers 22. The upper rolls are permanently pressed on the corresponding lower rolls through the acmg rolls is controlled from the main o of the press through ,the intermediary of MThe first -of different diameters of the same roll.

feeding rolls are rotated-so that 4 forward the strips of sheet metal, the cartion of an adjustable spring 23, but they may be raised, in overcoming the action of' the sprin with the aid of a lever 24 through t e rotation of an axle 25, formstance simultaneously with the stopping of the press or when the ram is thrown out of gear.

It. is essential that the rolls fort-he two strips of sheet metal have cylindrical bodies the body 26 ofthe roll 20 is, ,for instance, of greater diameter than the body 27 of roll 21. The corresponding body 28 of the lower roll 19 is also of greater diameter than the body 29 When the rolls are being operated in the well known manner from the lower roll by means of spur wheels the 1 of sheet metal is advanced more e revolving movement for the convey shaft a rocking lever, pulling pawl or the like.

1 The operation of the machine is as folows':-

shape the top and bottom parts in'the strips of sheet metal, thelast punch of row ,7 inserting the finished top part into a cavity of the revolving disk 5, The last 'punch of row 8 puts the bottom part on'the top part in the preceding cavity and the punch 9 unites the two parts to a button in the cavit which is in frontof the cavityinto whic the bottom part is being deposlted. At the backstroke of theram with-the punches the they pull punches of the rows 7 and 8 v of the revolving riage 14 being operated a a. sat time to advance the revolving disk for one division. so that the proceeding which has just been described can be repeated.

I claim 1. A device for-the production of metal buttons by means of an eccentric press from two strips of material conducted through the press parallel to in combination an eccentric press with an outer ram and an inner ram working in said outer ram, a die plate,,a revolving disk under said die plate, a feeding the strips of material. in proximity to each other over the die, a row of punches over each strip of material forshaping the elements of the button, being connected with the outer ram, a drawing tool arranged in the extreme punch of one row of punches seen inthe direction of movement .of the strip of material, andan each vother, comprising device for guiding said two rows of punches assembling punch for uniting the shaped and' v two strips of material conducted through the press parallelto each other, comprising in combination an eccentric press'w'ith an outer ram and an inner ram working in said outer ram, a die plate, a revolving disk under said die plate, a feeding device for guiding the strips of material in proximity to each other over the die, a row of punches over each strip of material for shaping the-elements of the button, the one row of punches shaping and punching the top parts, the other row of punches shaping and punch ng the bottom parts ofthe buttons, -said two rows of punches being connected with the outer ram, a drawing tool arranged in the extreme .punch of one row -of punches seen in the di- '.rectio1i of movement of the strip of mateguide said punches, a spring-controlled punches designed to drawing :pawl operated at-every working stroke of therams and moulds spaced a distanceapart which is equal to the lateral distance between the two rows of punches, so that for each stroke disk a mould is in alignfeeding-the revolving disk, said revolving disk being provided with ment with the last punch of each rowin the direction in which the strip of material movesand under the assembling punch. f

said upper rolls,

3. A device for the production of metal buttons by means of an eccentric press from two strips of material conducted through the press parallel to each other, comprising in combination an eccentric press with an outer ram and an inner ram workin in said outer ram, a die plate, rolls and a lower roll for guiding the strips of material over said die in proximit to each other said lower roll serving for 0th strips of material at the same time said upper rolls being of different diameter for each strip of material, a common bearing for means for raising and lowering said bearing of the upper rolls, a row of punches over each strip of material for shaping the elements of the button, the one row of punches shaping and punching the top parts of the buttons the other row of punches shaping and punching the bottom parts of the buttons, said -two rows of punches being connected with the outer ram, a

drawing tool arranged in the a revolving disk, two uppercontrolled sleeves in of onerow of punches seen in the direction of movement, of the strip of material, an assemblin punch for uniting the shaped and punche button elements said last mentioned two punches being connected with the inner ram, :1 plate above the die common to all the punches and designed to guide said punches, a spring-controlled drawing'pawl operated at every working stroke of the rams and feeding the revolving disk, sprin the revolving dis spaced at a distance which is equal to the lateral distance of the rows of punches so that a sleeve is in alignment-with the last punch of each row in the direction in which the strip of material moves and another sleeve under the assembling punch, and bolts in said sleeves, said bolts resting upon said die plate 7 y In testimony whereof I afiix my signature.

. HUGO ISRINGHAUS.

extreme punch 

